Run results for: Float32Array vs DataView 2022

Run details:

User agent: Mozilla/5.0 (X11; Ubuntu; Linux x86_64; rv:109.0) Gecko/20100101 Firefox/116.0

Browser: Firefox 116

Operating system: Ubuntu

Device Platform: Desktop

Date tested: one year ago

Test name	Executions per second
DataView	653947776.0 Ops/sec
Float32Array	640128192.0 Ops/sec

Script Preparation code:

var size = 0xFFFF;
var data = new Float32Array(size);
var floatArray = new Float32Array(size);
var dataView = new DataView(new ArrayBuffer(size * 4));

for (let i = 0; i < size; i++) {
	data[i] = 100*Math.random();
	floatArray[i] = 100*Math.random();
	dataView[i] = 100*Math.random();
}

Tests:

DataView
for (let i; i < size; i++) { dataView.setFloat32(i * 4, data[i]); } return dataView.getFloat32(i * size - 16)
Float32Array
for (let i; i < size; i++) { floatArray[i] = data[i]; } return floatArray[size - 4]